Home / 20,340.54-30,475.89-18,286.20

Finding the Fourth Proportional to 20,340.54, 30,475.89 and 18,286.20

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Solution

The fourth proportional to 20,340.54, 30,475.89 and 18,286.20 is: 27,397.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,340.54 : 30,475.89 = 18,286.20 : x
  2. Step 2: Convert to fraction form
    20,340.54/30,475.89 = 18,286.20/x
  3. Step 3: Cross multiply
    20,340.54x = 30,475.89 × 18,286.20
  4. Step 4: Simplify right side
    20,340.54x = 557,288,219.72
  5. Step 5: Solve for x
    x = 557,288,219.72/20,340.54
  6. Step 6: Final answer
    x = 27,397.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.